The 6-bladed R391 propeller for the Lockheed Martin Hercules C-130J aircraft incorporates advanced technologies developed by Dowty Propellers over the past 60 years and is certified to FAR35 and JAR-P. It offers the following benefits:

Advanced Swept Blade Design

• Optimised ARAD-A aerofoil sections

• Excellent take-off and climb performance

• Very low noise levels

High Integrity All-Composite Blades

• Over 30% lower system weight

• Service proven, rugged construction

• Unmatched 25-year record of operational safety and reliability

• Highly effective erosion protection system

Fail-Safe Electronic Control System

• Fully integrated with engine electronic control system

• Precise speed selection and synchrophasing accuracy

• Counterweighted blades assure safe coarse-seeking operation

• Single lever cockpit control

Low Maintenance Costs

• Modular configuration

• No mechanical linkages to cockpit

• Simple hub construction

• 50% lower parts count